v3.26.1
Loans, Impaired Loans, and Allowance for Credit Losses (Summary of Loans Past Due but Not Impaired) (Details) - CAD ($)
$ in Millions
Apr. 30, 2026
Oct. 31, 2025
Disclosure of detailed information about financial instruments [line items]    
Gross Loans $ 972,708 $ 961,701
Financial assets past due but not impaired [member]    
Disclosure of detailed information about financial instruments [line items]    
Gross Loans 1,798 1,957
Financial assets past due but not impaired [member] | Residential mortgages [member]    
Disclosure of detailed information about financial instruments [line items]    
Gross Loans 408 407
Financial assets past due but not impaired [member] | Consumer instalment and other personal [member]    
Disclosure of detailed information about financial instruments [line items]    
Gross Loans 855 930
Financial assets past due but not impaired [member] | Credit card [member]    
Disclosure of detailed information about financial instruments [line items]    
Gross Loans 349 373
Financial assets past due but not impaired [member] | Businesses and government [member]    
Disclosure of detailed information about financial instruments [line items]    
Gross Loans 186 247
Later than one month and not later than two months [member] | Financial assets past due but not impaired [member]    
Disclosure of detailed information about financial instruments [line items]    
Gross Loans 851 768
Later than one month and not later than two months [member] | Financial assets past due but not impaired [member] | Residential mortgages [member]    
Disclosure of detailed information about financial instruments [line items]    
Gross Loans 178 129
Later than one month and not later than two months [member] | Financial assets past due but not impaired [member] | Consumer instalment and other personal [member]    
Disclosure of detailed information about financial instruments [line items]    
Gross Loans 295 301
Later than one month and not later than two months [member] | Financial assets past due but not impaired [member] | Credit card [member]    
Disclosure of detailed information about financial instruments [line items]    
Gross Loans 244 253
Later than one month and not later than two months [member] | Financial assets past due but not impaired [member] | Businesses and government [member]    
Disclosure of detailed information about financial instruments [line items]    
Gross Loans 134 85
Later than two months and not later than three months [member] | Financial assets past due but not impaired [member]    
Disclosure of detailed information about financial instruments [line items]    
Gross Loans 2,649 2,725
Later than two months and not later than three months [member] | Financial assets past due but not impaired [member] | Residential mortgages [member]    
Disclosure of detailed information about financial instruments [line items]    
Gross Loans 586 536
Later than two months and not later than three months [member] | Financial assets past due but not impaired [member] | Consumer instalment and other personal [member]    
Disclosure of detailed information about financial instruments [line items]    
Gross Loans 1,150 1,231
Later than two months and not later than three months [member] | Financial assets past due but not impaired [member] | Credit card [member]    
Disclosure of detailed information about financial instruments [line items]    
Gross Loans 593 626
Later than two months and not later than three months [member] | Financial assets past due but not impaired [member] | Businesses and government [member]    
Disclosure of detailed information about financial instruments [line items]    
Gross Loans $ 320 $ 332